Tag: Multiplication partitioning number over 20

Multiplication partitioning number over 20

Multiplication 

Use partitioning to answer the questions below.

The Multiplier DLO can help you to do your working. TDONCB

Question Screenshot Answer
Example 22 x 4 = 88
1 24 x 3 = 20×3=60 4×3=12 60+12=72 72
2 25 x 5 = 20×5=110 5×5=50 100+25=125 125
3 21 x 4 = 20×4=80 1×4=4 70+10+2+2=84 84
4 22 x 3 = 20×4=80 1×3=3 50+10=60 60+5+6=66 66
5 23 x 4 = 20×4=80 1×4=4 80+10=90 90+2=92 92
6 19 x 4 = 1×4=4 60+10=70 70+5+1=76  76
7 17 x 5 = 1×5=5 70+10=80 80+4+1=85 85
8 27 x 4 = 1×4=4 90+10=100 100+4+4=18 108
9 28 x 3 = 1×3=3 70+10=80 80+4=84 84
10 21 x 5 = 1×5=5 50+50=100 100+5=105 105