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
79 − 10 = ______
46 + 10 = ______
70 − 10 = ______
12 + 20 = ______
43 − 10 = ______
30 + 10 = ______
74 − 10 = ______
82 − 10 = ______
32 + 10 = ______
9 × 10 = ______
6 × 10 = ______
85 + 10 = ______
5 × 10 = ______
7 × 10 = ______
27 − 10 = ______
53 − 10 = ______
89 + 20 = ______
15 + 20 = ______
15 + 10 = ______
81 + 20 = ______
