Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
61 + 20 = ______
29 − 10 = ______
3 × 10 = ______
22 − 10 = ______
55 + 20 = ______
9 × 10 = ______
4 × 10 = ______
41 − 10 = ______
59 + 10 = ______
8 × 10 = ______
51 + 20 = ______
21 − 10 = ______
6 × 10 = ______
18 + 10 = ______
30 + 20 = ______
43 + 10 = ______
12 + 20 = ______
88 + 10 = ______
1 × 10 = ______
65 + 20 = ______
