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 = ______
5 × 10 = ______
69 + 20 = ______
86 − 10 = ______
1 × 10 = ______
12 + 20 = ______
32 + 10 = ______
62 + 20 = ______
8 × 10 = ______
66 + 20 = ______
70 + 10 = ______
97 − 10 = ______
80 + 20 = ______
6 × 10 = ______
21 + 20 = ______
71 + 10 = ______
52 + 20 = ______
32 − 10 = ______
9 × 10 = ______
49 − 10 = ______
