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
4 × 10 = ______
9 × 10 = ______
27 − 10 = ______
29 − 10 = ______
51 − 10 = ______
80 − 10 = ______
67 + 20 = ______
88 + 20 = ______
83 + 10 = ______
71 + 20 = ______
40 + 10 = ______
6 × 10 = ______
31 − 10 = ______
2 × 10 = ______
41 + 20 = ______
54 − 10 = ______
8 × 10 = ______
32 + 10 = ______
30 − 10 = ______
18 + 20 = ______
