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 = ______
7 × 10 = ______
38 + 10 = ______
6 × 10 = ______
20 + 20 = ______
45 + 20 = ______
8 × 10 = ______
65 + 20 = ______
99 − 10 = ______
98 − 10 = ______
36 + 20 = ______
97 − 10 = ______
40 − 10 = ______
51 + 20 = ______
9 × 10 = ______
90 − 10 = ______
24 + 10 = ______
34 + 20 = ______
61 + 10 = ______
51 − 10 = ______
