Multiplication

Multiply big numbers without writing a single line of working.

• 1Multiply by 11Split the digits apart and drop their sum in the middle. 5 practice questions+20 XP
• 2Multiply by 5Halve the number, then add a zero. 4 practice questions+15 XP
• 3The 9 times table on your fingersFold one finger and read the answer off both hands. 4 practice questions+15 XP
• 4Multiply by 25Divide by 4 and add two zeros. 4 practice questions+15 XP
• 5Multiply two numbers near 100Work out how far each is below 100 and let those gaps do the work. 4 practice questions+25 XP
• 6Same tens digit, units adding to 10When 43 × 47 shows up, the answer takes five seconds. 4 practice questions+25 XP