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
70 + 10 = ______
69 + 10 = ______
52 − 10 = ______
34 − 10 = ______
41 + 20 = ______
8 × 10 = ______
42 + 20 = ______
20 + 20 = ______
7 × 10 = ______
31 − 10 = ______
57 + 10 = ______
43 + 20 = ______
81 − 10 = ______
11 + 10 = ______
6 × 10 = ______
16 + 20 = ______
30 − 10 = ______
4 × 10 = ______
34 + 10 = ______
9 × 10 = ______
