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
40 + 20 = ______
72 + 20 = ______
9 × 10 = ______
94 − 10 = ______
47 − 10 = ______
62 − 10 = ______
8 × 10 = ______
7 × 10 = ______
40 + 10 = ______
5 × 10 = ______
4 × 10 = ______
68 − 10 = ______
53 + 10 = ______
54 + 10 = ______
84 + 10 = ______
1 × 10 = ______
61 − 10 = ______
85 − 10 = ______
46 + 10 = ______
54 + 20 = ______
