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

Click here to take the quiz!

General Stats
Answer Stats
Score Distribution
Your Score History

General Stats

This quiz has been taken 6,663 times
The average score is 7 of 16

Answer Stats

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