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
74 + 20 = ______
3 × 10 = ______
56 + 10 = ______
8 × 10 = ______
7 × 10 = ______
6 × 10 = ______
88 + 20 = ______
80 + 20 = ______
60 − 10 = ______
1 × 10 = ______
80 − 10 = ______
9 × 10 = ______
69 + 10 = ______
40 − 10 = ______
39 − 10 = ______
53 + 10 = ______
41 + 20 = ______
25 + 20 = ______
59 + 20 = ______
81 − 10 = ______
