Remember: Multiply the ones, trade up, then multiply the tens and add the tens that traded up.
Read and answer
Read the story first.
The bracelet orderMia and Ben ran a bracelet stall at the school fair. Every bracelet needed twenty-six beads. A girl ordered four bracelets, so Ben had to find four times twenty-six. He used the frame and started with the ones. Four times six makes twenty-four ones. A row holds only ten, so he traded two tens up and kept four ones. Then he did the tens. Four times two tens makes eight tens, and the two traded tens made ten tens in all. That row was full, so he traded ten tens up for one hundred.
1
Ben starts with the ones. Four times six makes ones.
2
A row holds only ten beads. What does Ben do with 24 ones?
Slide all 24 ones acrossTrade two tens up, keep four onesThrow away the extra ones
3
Four times two tens makes tens.
4
Eight tens and the two traded tens make tens.
5
The tens row is full with ten tens. Ten tens trade up for what?
one hundredten onesone more ten
6
Which frame shows Ben's answer, 4 × 26?
ABC
On the frame
7
Mia packs 5 bags of 18 beads. 5 × 18 =
8
Seven times sixteen makes one hundred two.
TrueFalse
9
Four times nineteen makes seventy-six.
TrueFalse
10
Ben says 3 × 14 = 32. What did he forget?
To start with the onesTo count the ones twiceTo add the ten that traded up
11
Put the steps in order.
Multiply the ones row
Trade up if the row is full
Add the tens that traded up
Multiply the tens row
12
Stretch: 6 × 47 =
13
Draw the beads for 3 × 14 on the empty frame. Trade if you need to.
14
How do you know when to trade up? Tell it in your own words.
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