Multiplying bigger numbers

Grade 4 · Level 4 · Sheet 1

Scan to check
the answers

Name Date

Free from tutor.in4me.app · 4.NBT.B.5 · Five minutes a day online, and the difficulty follows your child.

1.
77×72
2.
65×47
3.
63×55
4.
78×52
5.
55×43
6.
75×38
7.
66×15
8.
83×51
9.
32×19
10.
79×78
11.
94×51
12.
81×72

Show the answer key

1.5,544
2.3,055
3.3,465
4.4,056
5.2,365
6.2,850
7.990
8.4,233
9.608
10.6,162
11.4,794
12.5,832

The mistakes behind most wrong answers

A wrong answer in multiplying bigger numbers is rarely random. These are the ones that come up most often, each on a real problem — worth knowing before you mark a sheet, because the fix for each is different.

93×74=?
The answer is 6,882. A child who answers 6,312 probably multiplied the tens and the ones but not the rest.
46×94=?
The answer is 4,324. A child who answers 184 probably answered the first half and stopped.
11×32=?
The answer is 352. A child who answers 43 probably added instead of multiplying.

In the app, every wrong answer is matched against mistakes like these, and the weekly email tells you which one your child keeps making — in those words, not as a percentage.

Answer key · Multiplying bigger numbers · Level 4 · Sheet 1

The mistakes behind most wrong answers