Get to the next ten

What this lesson shows

68 + 7 on a number line: 2 to reach 70, then 5 more. 75.

The worked example

The lesson works this one step by step: 68 + 7 = □. Then your kid tries one like it on paper.

The steps

1. Start on the line
2. Jump to the next ten
3. Jump the rest

Helping at home

On a number line, jump from the number to the next ten. Split the number you add: the part that reaches the ten, then the rest.

If your kid gets stuck

How far to the next ten?

Standards

• Common Core 1.NBT.C.4
  Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.

More in this unit

• Adding ones to a two-digit number
• Twelve ones is a new ten
• Count back to the ten
• Open a ten
• The ten you opened is gone
• Take away tens