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
12 + 10 = ______
1 × 10 = ______
44 − 10 = ______
56 − 10 = ______
89 − 10 = ______
51 + 20 = ______
6 × 10 = ______
65 + 20 = ______
7 × 10 = ______
9 × 10 = ______
33 + 10 = ______
83 + 10 = ______
4 × 10 = ______
88 − 10 = ______
71 + 10 = ______
68 + 10 = ______
45 + 10 = ______
17 + 10 = ______
8 × 10 = ______
15 + 20 = ______
