Statistics for Fast Math - Double That Number! in 30 Seconds

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General Stats
Answer Stats
Score Distribution
Your Score History

General Stats

This quiz has been taken 6,568 times
The average score is 8 of 16

Answer Stats

Number	Double	% Correct
5	10	100%
530	1060	100%
601	1202	100%
614	1228	100%
643	1286	100%
715	1430	100%
8	16	100%
810	1620	100%
84	168	100%
91	182	100%
103	206	100%
123	246	100%
125	250	100%
20	40	100%
220	440	100%
24	48	100%
27	54	100%
30	60	100%
35	70	100%
47	94	100%
551	1102	92%
95	190	92%
32	64	91%
104	208	90%
23	46	90%
511	1022	89%
512	1024	89%
520	1040	89%
60	120	89%
66	132	89%
113	226	89%
28	56	89%
29	58	89%
57	114	88%
701	1402	88%
161	322	88%
19	38	88%
25	50	88%
261	522	88%
53	106	86%
622	1244	86%
63	126	86%
7	14	86%
85	170	86%
900	1800	86%
97	194	86%
108	216	86%
14	28	86%
199	398	86%
203	406	86%
257	514	86%
37	74	86%
504	1008	83%
55	110	83%
70	140	83%
72	144	83%
771	1542	83%
806	1612	83%
81	162	83%
9	18	83%
907	1814	83%
93	186	83%
302	604	83%
437	874	83%
443	886	83%
700	1400	82%
707	1414	82%
75	150	82%
930	1860	82%
145	290	82%
253	506	82%
414	828	82%
44	88	82%
522	1044	80%
58	116	80%
59	118	80%
65	130	80%
690	1380	80%
77	154	80%
814	1628	80%
912	1824	80%
921	1842	80%
94	188	80%
99	198	80%
11	22	80%
114	228	80%
120	240	80%
133	266	80%
140	280	80%
16	32	80%
164	328	80%
190	380	80%
192	384	80%
240	480	80%
326	652	80%
350	700	80%
370	740	80%
422	844	80%
204	408	79%
534	1068	78%
543	1086	78%
573	1146	78%
71	142	78%
825	1650	78%
905	1810	78%
10	20	78%
130	260	78%
160	320	78%
205	410	78%
340	680	78%
400	800	78%
403	806	78%
404	808	78%
416	832	78%
46	92	78%
171	342	77%
407	814	77%
505	1010	75%
509	1018	75%
517	1034	75%
603	1206	75%
619	1238	75%
620	1240	75%
644	1288	75%
67	134	75%
750	1500	75%
76	152	75%
800	1600	75%
848	1696	75%
850	1700	75%
852	1704	75%
86	172	75%
87	174	75%
901	1802	75%
916	1832	75%
92	184	75%
922	1844	75%
929	1858	75%
109	218	75%
188	376	75%
193	386	75%
21	42	75%
232	464	75%
271	542	75%
290	580	75%
306	612	75%
344	688	75%
39	78	75%
40	80	75%
41	82	75%
42	84	75%
432	864	75%
440	880	75%
441	882	75%
444	888	75%
502	1004	73%
634	1268	73%
68	136	73%
704	1408	73%
143	286	73%
18	36	73%
501	1002	71%
510	1020	71%
532	1064	71%
544	1088	71%
6	12	71%
654	1308	71%
670	1340	71%
708	1416	71%
950	1900	71%
98	196	71%
157	314	71%
184	368	71%
200	400	71%
210	420	71%
213	426	71%
223	446	71%
235	470	71%
280	560	71%
307	614	71%
310	620	71%
311	622	71%
450	900	71%
640	1280	70%
911	1822	70%
110	220	70%
127	254	70%
175	350	70%
183	366	70%
225	450	70%
229	458	70%
259	518	70%
43	86	70%
51	102	69%
460	920	69%
54	108	67%
557	1114	67%
56	112	67%
607	1214	67%
631	1262	67%
64	128	67%
662	1324	67%
713	1426	67%
719	1438	67%
726	1452	67%
73	146	67%
740	1480	67%
78	156	67%
781	1562	67%
792	1584	67%
799	1598	67%
801	1602	67%
807	1614	67%
853	1706	67%
875	1750	67%
908	1816	67%
940	1880	67%
953	1906	67%
985	1970	67%
106	212	67%
13	26	67%
15	30	67%
177	354	67%
211	422	67%
215	430	67%
218	436	67%
221	442	67%
241	482	67%
243	486	67%
250	500	67%
301	602	67%
319	638	67%
321	642	67%
373	746	67%
401	802	67%
421	842	67%
424	848	67%
426	852	67%
430	860	67%
453	906	67%
464	928	67%
465	930	67%
48	96	67%
500	1000	64%
52	104	64%
645	1290	64%
730	1460	64%
80	160	64%
826	1652	64%
932	1864	64%
116	232	64%
217	434	64%
230	460	64%
231	462	64%
246	492	64%
31	62	64%
415	830	64%
49	98	64%
552	1104	63%
604	1208	63%
61	122	63%
625	1250	63%
717	1434	63%
737	1474	63%
830	1660	63%
913	1826	63%
107	214	63%
135	270	63%
136	272	63%
141	282	63%
144	288	63%
154	308	63%
165	330	63%
194	388	63%
216	432	63%
296	592	63%
303	606	63%
317	634	63%
338	676	63%
452	904	63%
343	686	62%
431	862	62%
480	960	62%
50	100	60%
524	1048	60%
537	1074	60%
542	1084	60%
550	1100	60%
554	1108	60%
560	1120	60%
590	1180	60%
630	1260	60%
648	1296	60%
661	1322	60%
718	1436	60%
768	1536	60%
790	1580	60%
794	1588	60%
803	1606	60%
805	1610	60%
840	1680	60%
857	1714	60%
90	180	60%
910	1820	60%
927	1854	60%
945	1890	60%
951	1902	60%
100	200	60%
111	222	60%
115	230	60%
131	262	60%
132	264	60%
138	276	60%
178	356	60%
182	364	60%
214	428	60%
236	472	60%
244	488	60%
270	540	60%
300	600	60%
313	626	60%
327	654	60%
38	76	60%
386	772	60%
417	834	60%
451	902	60%
503	1006	58%
611	1222	58%
703	1406	58%
934	1868	58%
168	336	58%
508	1016	57%
516	1032	57%
536	1072	57%
605	1210	57%
628	1256	57%
650	1300	57%
716	1432	57%
746	1492	57%
755	1510	57%
767	1534	57%
813	1626	57%
823	1646	57%
837	1674	57%
841	1682	57%
960	1920	57%
102	204	57%
105	210	57%
118	236	57%
122	244	57%
179	358	57%
228	456	57%
284	568	57%
299	598	57%
305	610	57%
312	624	57%
33	66	57%
360	720	57%
365	730	57%
379	758	57%
381	762	57%
423	846	57%
433	866	57%
45	90	57%
454	908	57%
531	1062	56%
606	1212	56%
636	1272	56%
680	1360	56%
696	1392	56%
705	1410	56%
821	1642	56%
915	1830	56%
172	344	56%
207	414	56%
233	466	56%
273	546	56%
297	594	56%
308	616	56%
333	666	56%
347	694	56%
406	812	56%
408	816	56%
413	826	56%
442	884	56%
541	1082	55%
575	1150	55%
593	1186	55%
616	1232	55%
664	1328	55%
824	1648	55%
884	1768	55%
904	1808	55%
162	324	55%
180	360	55%
222	444	55%
364	728	55%
405	810	55%
602	1204	54%
835	1670	54%
854	1708	54%
170	340	54%
226	452	54%
334	668	54%
380	760	54%
304	608	53%
506	1012	50%
518	1036	50%
535	1070	50%
549	1098	50%
553	1106	50%
576	1152	50%
594	1188	50%
610	1220	50%
612	1224	50%
613	1226	50%
618	1236	50%
62	124	50%
621	1242	50%
624	1248	50%
632	1264	50%
633	1266	50%
639	1278	50%
641	1282	50%
647	1294	50%
649	1298	50%
655	1310	50%
660	1320	50%
706	1412	50%
74	148	50%
741	1482	50%
744	1488	50%
757	1514	50%
776	1552	50%
811	1622	50%
82	164	50%
820	1640	50%
822	1644	50%
83	166	50%
838	1676	50%
860	1720	50%
862	1724	50%
870	1740	50%
88	176	50%
890	1780	50%
902	1804	50%
909	1818	50%
923	1846	50%
931	1862	50%
938	1876	50%
942	1884	50%
961	1922	50%
973	1946	50%
981	1962	50%
986	1972	50%
990	1980	50%
12	24	50%
121	242	50%
124	248	50%
128	256	50%
134	268	50%
146	292	50%
149	298	50%
156	312	50%
167	334	50%
176	352	50%
189	378	50%
208	416	50%
234	468	50%
245	490	50%
248	496	50%
26	52	50%
260	520	50%
266	532	50%
275	550	50%
283	566	50%
288	576	50%
291	582	50%
315	630	50%
318	636	50%
322	644	50%
329	658	50%
331	662	50%
34	68	50%
352	704	50%
356	712	50%
383	766	50%
390	780	50%
397	794	50%
402	804	50%
410	820	50%
411	822	50%
412	824	50%
420	840	50%
436	872	50%
455	910	50%
456	912	50%
463	926	50%
470	940	50%
471	942	50%
472	944	50%
487	974	50%
490	980	50%
514	1028	47%
527	1054	46%
615	1230	46%
735	1470	46%
191	382	46%
274	548	46%
561	1122	45%
867	1734	45%
873	1746	45%
880	1760	45%
142	284	45%
428	856	45%
485	970	45%
525	1050	44%
595	1190	44%
642	1284	44%
684	1368	44%
714	1428	44%
720	1440	44%
724	1448	44%
779	1558	44%
780	1560	44%
827	1654	44%
836	1672	44%
849	1698	44%
96	192	44%
101	202	44%
163	326	44%
174	348	44%
206	412	44%
219	438	44%
227	454	44%
258	516	44%
264	528	44%
391	782	44%
429	858	44%
434	868	44%
445	890	44%
467	934	44%
494	988	44%
591	1182	43%
629	1258	43%
637	1274	43%
721	1442	43%
725	1450	43%
743	1486	43%
783	1566	43%
846	1692	43%
866	1732	43%
920	1840	43%
928	1856	43%
935	1870	43%
982	1964	43%
991	1982	43%
994	1988	43%
151	302	43%
152	304	43%
201	402	43%
242	484	43%
249	498	43%
256	512	43%
277	554	43%
279	558	43%
320	640	43%
332	664	43%
353	706	43%
355	710	43%
581	1162	42%
635	1270	42%
679	1358	42%
760	1520	42%
971	1942	42%
22	44	42%
357	714	42%
376	752	42%
498	996	42%
469	938	41%
507	1014	40%
515	1030	40%
519	1038	40%
526	1052	40%
540	1080	40%
565	1130	40%
584	1168	40%
646	1292	40%
653	1306	40%
663	1326	40%
682	1364	40%
709	1418	40%
711	1422	40%
738	1476	40%
753	1506	40%
754	1508	40%
788	1576	40%
795	1590	40%
817	1634	40%
832	1664	40%
844	1688	40%
861	1722	40%
894	1788	40%
918	1836	40%
936	1872	40%
937	1874	40%
980	1960	40%
112	224	40%
119	238	40%
148	296	40%
150	300	40%
155	310	40%
158	316	40%
159	318	40%
185	370	40%
198	396	40%
262	524	40%
294	588	40%
316	632	40%
349	698	40%
358	716	40%
447	894	40%
448	896	40%
476	952	40%
491	982	40%
492	984	40%
533	1066	38%
578	1156	38%
600	1200	38%
627	1254	38%
659	1318	38%
675	1350	38%
687	1374	38%
689	1378	38%
712	1424	38%
722	1444	38%
766	1532	38%
845	1690	38%
869	1738	38%
933	1866	38%
943	1886	38%
949	1898	38%
956	1912	38%
962	1924	38%
987	1974	38%
992	1984	38%
129	258	38%
137	274	38%
153	306	38%
166	332	38%
267	534	38%
272	544	38%
323	646	38%
341	682	38%
366	732	38%
372	744	38%
393	786	38%
399	798	38%
418	836	38%
497	994	38%
499	998	38%
669	1338	36%
742	1484	36%
749	1498	36%
778	1556	36%
797	1594	36%
856	1712	36%
914	1828	36%
117	234	36%
169	338	36%
186	372	36%
254	508	36%
309	618	36%
374	748	36%
409	818	36%
435	870	36%
462	924	36%
483	966	36%
528	1056	33%
529	1058	33%
547	1094	33%
548	1096	33%
586	1172	33%
598	1196	33%
626	1252	33%
665	1330	33%
671	1342	33%
681	1362	33%
69	138	33%
692	1384	33%
693	1386	33%
699	1398	33%
710	1420	33%
745	1490	33%
751	1502	33%
758	1516	33%
762	1524	33%
770	1540	33%
773	1546	33%
79	158	33%
802	1604	33%
809	1618	33%
812	1624	33%
842	1684	33%
847	1694	33%
858	1716	33%
859	1718	33%
863	1726	33%
871	1742	33%
897	1794	33%
899	1798	33%
919	1838	33%
946	1892	33%
947	1894	33%
959	1918	33%
17	34	33%
173	346	33%
197	394	33%
224	448	33%
263	526	33%
287	574	33%
328	656	33%
339	678	33%
345	690	33%
348	696	33%
359	718	33%
361	722	33%
363	726	33%
367	734	33%
369	738	33%
371	742	33%
419	838	33%
425	850	33%
438	876	33%
457	914	33%
458	916	33%
473	946	33%
479	958	33%
495	990	33%
752	1504	31%
877	1754	31%
975	1950	31%
978	1956	31%
513	1026	30%
538	1076	30%
539	1078	30%
695	1390	30%
883	1766	30%
988	1976	30%
238	476	30%
281	562	30%
475	950	30%
683	1366	29%
686	1372	29%
729	1458	29%
733	1466	29%
734	1468	29%
772	1544	29%
785	1570	29%
804	1608	29%
816	1632	29%
828	1656	29%
855	1710	29%
882	1764	29%
886	1772	29%
891	1782	29%
895	1790	29%
925	1850	29%
209	418	29%
212	424	29%
239	478	29%
251	502	29%
255	510	29%
295	590	29%
298	596	29%
324	648	29%
325	650	29%
330	660	29%
36	72	29%
362	724	29%
389	778	29%
439	878	29%
466	932	29%
782	1564	27%
958	1916	27%
139	278	27%
202	404	27%
521	1042	25%
545	1090	25%
558	1116	25%
568	1136	25%
580	1160	25%
585	1170	25%
656	1312	25%
657	1314	25%
673	1346	25%
676	1352	25%
677	1354	25%
727	1454	25%
728	1456	25%
732	1464	25%
739	1478	25%
748	1496	25%
761	1522	25%
764	1528	25%
775	1550	25%
796	1592	25%
815	1630	25%
818	1636	25%
819	1638	25%
843	1686	25%
872	1744	25%
889	1778	25%
893	1786	25%
896	1792	25%
898	1796	25%
906	1812	25%
957	1914	25%
963	1926	25%
968	1936	25%
972	1944	25%
984	1968	25%
187	374	25%
196	392	25%
276	552	25%
292	584	25%
293	586	25%
335	670	25%
336	672	25%
375	750	25%
382	764	25%
384	768	25%
427	854	25%
461	922	25%
477	954	25%
481	962	25%
482	964	25%
484	968	25%
493	986	25%
546	1092	23%
623	1246	23%
798	1596	23%
851	1702	23%
395	790	23%
486	972	23%
555	1110	22%
577	1154	22%
668	1336	22%
672	1344	22%
723	1446	22%
786	1572	22%
787	1574	22%
791	1582	22%
874	1748	22%
89	178	22%
917	1834	22%
924	1848	22%
941	1882	22%
944	1888	22%
964	1928	22%
989	1978	22%
126	252	22%
181	362	22%
195	390	22%
269	538	22%
392	784	22%
398	796	22%
449	898	22%
474	948	22%
556	1112	20%
563	1126	20%
570	1140	20%
572	1144	20%
583	1166	20%
592	1184	20%
608	1216	20%
638	1276	20%
651	1302	20%
652	1304	20%
765	1530	20%
769	1538	20%
774	1548	20%
864	1728	20%
903	1806	20%
939	1878	20%
948	1896	20%
993	1986	20%
147	294	20%
252	504	20%
286	572	20%
314	628	20%
342	684	20%
351	702	20%
446	892	20%
488	976	20%
587	1174	18%
954	1908	18%
562	1124	17%
564	1128	17%
589	1178	17%
597	1194	17%
667	1334	17%
685	1370	17%
697	1394	17%
756	1512	17%
829	1658	17%
834	1668	17%
892	1784	17%
926	1852	17%
955	1910	17%
965	1930	17%
969	1938	17%
278	556	17%
282	564	17%
337	674	17%
459	918	17%
567	1134	14%
582	1164	14%
596	1192	14%
658	1316	14%
688	1376	14%
731	1462	14%
833	1666	14%
868	1736	14%
966	1932	14%
974	1948	14%
979	1958	14%
237	474	14%
346	692	14%
368	736	14%
387	774	14%
489	978	14%
496	992	14%
566	1132	13%
574	1148	13%
694	1388	13%
698	1396	13%
702	1404	13%
747	1494	13%
808	1616	13%
839	1678	13%
878	1756	13%
888	1776	13%
285	570	13%
579	1158	11%
588	1176	11%
674	1348	11%
876	1752	11%
879	1758	11%
952	1904	11%
967	1934	11%
976	1952	11%
354	708	11%
385	770	11%
388	776	11%
569	1138	10%
736	1472	10%
885	1770	10%
887	1774	10%
983	1966	10%
523	1046	9%
784	1568	9%
378	756	9%
666	1332	8%
865	1730	8%
977	1954	8%
559	1118	0%
571	1142	0%
599	1198	0%
609	1218	0%
617	1234	0%
678	1356	0%
691	1382	0%
759	1518	0%
763	1526	0%
777	1554	0%
789	1578	0%
793	1586	0%
831	1662	0%
881	1762	0%
970	1940	0%
247	494	0%
265	530	0%
268	536	0%
289	578	0%
377	754	0%
394	788	0%
396	792	0%
468	936	0%
478	956	0%