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
73 + 10 = ______
34 + 20 = ______
8 × 10 = ______
21 − 10 = ______
65 − 10 = ______
27 − 10 = ______
61 − 10 = ______
58 + 20 = ______
34 + 10 = ______
34 − 10 = ______
88 − 10 = ______
83 + 20 = ______
85 + 20 = ______
2 × 10 = ______
74 + 20 = ______
69 + 10 = ______
5 × 10 = ______
89 − 10 = ______
6 × 10 = ______
9 × 10 = ______
