4. Complete the following, using the examples on page 85 to help you. a) 20 × 60 = (20 × 10) × 6 = c) 70 × 20 = ( × ) × e) 50 × 20 = ( × ) ×
= =
5.
a) 26 × 19
6.
a) 60 × 46
7.
a) 124 × 38
8.
b) 37 × 23
b) 88 × 66
b) 173 × 24
a) 164 × 34 = e) 500 × 15 =
c) 52 × 15
c) 74 × 39
c) 235 × 18
d) 63 × 24
d) 58 × 26
d) 478 × 13
b) 330 × 25 = f) 135 × 21 =
e) 19 × 36
e) 42 × 23
e) 279 × 27
f) 49 × 13
f) 92 × 18
f) 209 × 32
c) 418 × 14 = g) 208 × 19 =
b) 30 × 60 = ( × 10) × d) 40 × 90 = ( × ) ×
g) 23 × 35
g) 78 × 12
g) 169 × 42
= = f) 30 × 60 = ( × ) × =
h) 35 × 16
h) 48 × 25
h) 147 × 37
d) 198 × 36 = h) 199 × 35 =
Recap • I can multiply a three-digit number by a one-digit number. • I can estimate my answers before I multiply. • I can multiply a two-digit number by a two-digit number. • I can multiply a three-digit number by a two-digit number. • I can solve multiplication word problems. • I can use my calculator to check my answers.