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
9 × 10 = ______
7 × 10 = ______
1 × 10 = ______
30 − 10 = ______
67 − 10 = ______
83 − 10 = ______
8 × 10 = ______
5 × 10 = ______
78 − 10 = ______
40 + 10 = ______
86 + 10 = ______
52 − 10 = ______
53 + 20 = ______
80 + 10 = ______
77 − 10 = ______
20 + 20 = ______
79 − 10 = ______
24 + 10 = ______
56 + 10 = ______
2 × 10 = ______
